Slovenia is approximately 20,273 sq km, while Seychelles is approximately 455 sq km, making Seychelles 2.24% the size of Slovenia. Meanwhile, the population of Slovenia is ~2.1 million people (2.0 million fewer people live in Seychelles).
This to-scale map shows a size comparison of Slovenia compared to Seychelles. For more details, see an in-depth quality of life comparison of Seychelles vs. Slovenia using our country comparison tool.